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| author | Jovan Zelincevic <jovan.zelincevic@imgtec.com> | 2015-06-30 11:53:04 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2015-07-09 14:41:19 +0200 |
| commit | 08be74ac8154e4a8936b7023cc3a7f5396fb182c (patch) | |
| tree | 525d36863acea79bb815a2ce3a28db565a952f6e /libavcodec/sinewin_tablegen.h | |
| parent | f497a9e84edb24c99a9043e1b21c7e48f3908e87 (diff) | |
| download | ffmpeg-08be74ac8154e4a8936b7023cc3a7f5396fb182c.tar.gz | |
libavcodec: Implementation of AAC_fixed_decoder (LC-module) [2/4]
Add fixed point implementation of functions for generating tables
Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/sinewin_tablegen.h')
| -rw-r--r-- | libavcodec/sinewin_tablegen.h | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/libavcodec/sinewin_tablegen.h b/libavcodec/sinewin_tablegen.h index 2b9c4f2393..e1623b472a 100644 --- a/libavcodec/sinewin_tablegen.h +++ b/libavcodec/sinewin_tablegen.h @@ -41,26 +41,41 @@ SINETABLE(2048); SINETABLE(4096); SINETABLE(8192); #else +#if USE_FIXED +#include "libavcodec/sinewin_fixed_tables.h" +#else #include "libavcodec/sinewin_tables.h" #endif +#endif + +#if USE_FIXED +#define SINEWIN_SUFFIX(a) a ## _fixed +#define INTFLOAT int +#define SIN_FIX(a) (int)floor((a) * 0x80000000 + 0.5) +#else +#define SINEWIN_SUFFIX(a) a +#define INTFLOAT float +#define SIN_FIX(a) a +#endif -SINETABLE_CONST float * const ff_sine_windows[] = { +SINETABLE_CONST INTFLOAT * const SINEWIN_SUFFIX(ff_sine_windows)[] = { NULL, NULL, NULL, NULL, NULL, // unused - ff_sine_32 , ff_sine_64 , - ff_sine_128, ff_sine_256, ff_sine_512, ff_sine_1024, ff_sine_2048, ff_sine_4096, ff_sine_8192 + SINEWIN_SUFFIX(ff_sine_32) , SINEWIN_SUFFIX(ff_sine_64), SINEWIN_SUFFIX(ff_sine_128), + SINEWIN_SUFFIX(ff_sine_256), SINEWIN_SUFFIX(ff_sine_512), SINEWIN_SUFFIX(ff_sine_1024), + SINEWIN_SUFFIX(ff_sine_2048), SINEWIN_SUFFIX(ff_sine_4096), SINEWIN_SUFFIX(ff_sine_8192) }; // Generate a sine window. -av_cold void ff_sine_window_init(float *window, int n) { +av_cold void SINEWIN_SUFFIX(ff_sine_window_init)(INTFLOAT *window, int n) { int i; for(i = 0; i < n; i++) - window[i] = sinf((i + 0.5) * (M_PI / (2.0 * n))); + window[i] = SIN_FIX(sinf((i + 0.5) * (M_PI / (2.0 * n)))); } -av_cold void ff_init_ff_sine_windows(int index) { - assert(index >= 0 && index < FF_ARRAY_ELEMS(ff_sine_windows)); +av_cold void SINEWIN_SUFFIX(ff_init_ff_sine_windows)(int index) { + assert(index >= 0 && index < FF_ARRAY_ELEMS(SINEWIN_SUFFIX(ff_sine_windows))); #if !CONFIG_HARDCODED_TABLES - ff_sine_window_init(ff_sine_windows[index], 1 << index); + SINEWIN_SUFFIX(ff_sine_window_init)(SINEWIN_SUFFIX(ff_sine_windows)[index], 1 << index); #endif } |